Carton sealer



Sept. 29, 1925.

e. K. HENDERSON CARTON SEALER 2 Sheets-Sheet 2 27 :5 2'5 IINVENTOR.GEQKGE' A. flE/vafxsam A TTORNEYJ.

Patented Sept. 29, 1925.

UNITED STATES PATENT OFFICE.

GEORGE K. HENDERSON, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO INTERNATIONALPRINTING COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION.

CARTON SEALER.

Application filed June 20, 1925.

T all whom it may concern:

Be it known that I, GEORGE. K. HENDER- SON, a citizen of the UnitedStates, and a resident of Indianapolis, county of Marion, and State ofIndiana, have invented a certain new and useful Carton Sealer; and I dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying draw ings,in which like numerals refer to like parts.

This invention relates to a carton or box sealing machine of asemi-automatic type wherein the knockdown cartons or boxes are placed onforms and their end and side flaps sealed by clamping them down afteradhe-' sive material has been applied, and holding themin clampedposition until the adhesion is complete.

The main object of the invention is to improve upon the machinedisclosed in Letters Patent No. 1,424,018 issued July th, 1922, wherebyprovision is made for simultaneously operating upon and sealing bothends of the box or-.- carton, and provide means for carrying 01'supporting the upper rollers, as well as exerting a clamping pressurethrough the lower rollers.

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims.

Fig. 1 is a perspective view of the machine looking toward the frontthereof with all of the clamps in sealing position. Fig. 2 is the sameas Fig. 1 with one set of clamps in open position. Fig. 8 is a top plan.view. Fig. 4 is a perspective view looking toward the bOttOni.

In the drawings there is shown a box clamping device comprising apedestal 10 having an upwardly extending shaft 11 upon which the table12 is rotatably mounted. Fixedly mounted or keyed to said shaft, thereis a cam track 13 below the table and a cam track 14 above the table.Therefore said table is rotatable with respect to the two cam tracksthrough the medium of the radial handles 15 which are secured thereto.Supported about the periphery of the table there are a plurality ofupright blocks 16 which are clamped to upright supports 17 through themedium of the screws 18. Said supports 17 are rigidly secured to theperiphery of the table braced thereon bythc brackr Serial No. 38,458.

ets 19. The forming blocks 16 extend below as well as above the surfaceof the table. The boxes 20 are mounted over the blocks16 so that theirflaps are folded down in the de sired position for sealing aftersuitable adhesive has been applied.

Hingedly mounted on each end of the block 16 there are upper clampingplates 21 and lower clamping plates 22, said clamping plates beingsecured to the arms 23 and 24 respectively. upper plates 21 there aresuitable weights 25-, and on the under surface of both plates 21 and 22there are suitable pads 26, the pads directly engaging the flaps of thebox or carton to be sealed. The weights 25 act, through gravity, tobring the upper plate 21 in sealing position when the rollers 29 en--gage the track 14 toapply the pressure required in a positive manner.

For moving the upper plates 21 in and out of clamping position, the camtrack 14 is cut away as shown in Figs. 1 and 3 at the forwardportion,and within said cutaway portion there is a downwardlyextendingprojecting flange or cam member 27 :On one side thereof thereis a second outwardly projecting trip cam member 28.

As the table is rotated "by the operator.

through the medium of the handles 11, the upper plates 21 are maintainedin clamping position through the medium of the weights 25 and engagementof the rollers 29, with thetrack 14. They continue inthis positionduring the rotation of the table until the respective rollers reach theposition where the track is broken as indicated at 30 in Fig. '3. Byreason of the inclined face of cam 27 engaging the rollers 29 overcomingthe weight 25, the roller drops through the opening in the track andengages the downwardly ex-- tending cam 27v so as to be forced toavertical position as illustrated at the top of Fig. 3. This relievesthe box so far as the upper end is concerned, whereby the operator mayremove it and replace itwith another box to be sealed. The furtherrotation of the table brings the roller 29, which is in lowered po-,sition, into engagement with the. inner surface of the cam 28. Itscontinued movement causes: it to be lifted back up on the track whereby,assisted by the weight 25, it will be caused to resume its clampingposition. This position it will maintain forpermitting the adhesive .onthe box to t e ef ectuntilit,

On the front portion of the;

on the arms 24, to exert an upward pressure against the lower end of thebox through the clamping plate 22. This clamping pressure is exertedduring the rotation of the table, until the rollers 31 reach the break1n the track indicated at 32. The weight of the clamping pla'te,overcoming that of the roller drops down away from the. box, and

rollerpasses up into the break in said track as shown in'Figsj2'and 4,As the break in the tracks 13 and 14: are positioned on the same sideofthe machine, the ends of the carton will be simultaneously relieved soas to permit theoperator to remove the sealed box, and replace a newbox'to be sealed while both ,clamping plates are in released poti n-Thus, both ends of the carton may be simultaneously operated upon,rather than a single end as heretofore.

The invention claimed is:

1. A sealing machine for paper receptacles having means for supporting areceptacle adjacent both ends'thereof, means for clamping and sealingthetop of said receptacle under pressure, meansxfor clamping andsealingthebottom thereof under pressure, and separate means foractuatingsaid top and .bottom' means I simultaneously for causing thesame to automatically release said ceptac e:

'2. A sealing machine for paper receptacles having means for supporting.a receptacle adjacent both endsithereof, means for clampingand/sealingthe .top of said receptacle under pressure, means for clamping andsealing the bottom thereof under pressure, separate means for actuatingsaid top and bottom gmeans simultaneously for causing the same toautomatically release said receptacle,"and means for thereafter causingsaid;top andbottom sealingmeans to be automatically brought back to.operative .positiorr.

3. Aisealing machine for paper receptacles having means for supporting areceptacle adjacent each end thereof, means for clampingand sealing thetop of said receptacle under pressure',means for clamping andsealinggthe bottom thereof under pressure. a

cam member for maintainingsaid bottom sealing lmeans in clampingposition through engagement therewith and having ,a cutaway portion for'permitting the release thereof, and a separate member for engagingtheftop' sealingrneans for releasing it from engaging positionsimultaneously with the releaseof the bottom sealing means.

egA sealing machine for paper receptacles having'a supporting member andcammem bers mounted on each side'thereof, said supporting member and cammembers being rotatable relative to each other, means for supporting areceptacle to besealed adjacent each end thereof on said supportingmeans, top clamping plates pivotally mounted on said supporting means,lower clamping plates pivotally mounted thereon, and means associatedwith said cam members for ac tuating said clamping plate, whereby theywill be simultaneously released from both ends of the receptacle whensaid members are brought to a given positionrelative .to each other, andon further relative move ment thereof will cause said clamping plates tobe brought into clamping position.

5., A sealing machine for paper reccptacles having a supporting memberfor supporting said receptacle adjacent each end thereof, an upper trackhaving a cutaway portion, a cam positioned in said cutaway portion, asecond cam member assoclated therewlth a lower track member havin acutaway portion, said track members and sup-' porting member beingrotatable relative to each other, upper clamping plates adapted to beactuated by said upper track, and lower clamping plates adapted to beactuated by said lower track member, whereby upon relative rotation ofsaid members said upper and lower clamping plates will be simultaneouslyreleased andthereafter simultaneously brought into clamping position.

6, A' sealing machine for paper receptacles having a supporting memberfor supporting the receptacle to beformed at eachend thereof, clampingplates positioned adjacent the upper and lower ends of said receptaclesso as to engage and clamp the ends thereof cam likemembers mountedon'said machine, and meansadapted upon the relativerotation of saidsupporting members and cam members with respect to each other to en gagesaid cam membersand simultaneously open said clamping plates withrespect to said receptacle for permitting its removal and replacement,and thereafter bring said clamping plates into engaging and clampingposition.

7. A sealing machine for paper receptacles comprising upper and lowerstationary tracks, said tracks being provided with cutawayportions oneach side of saidmachine, a supporting tablerotatably mounted be tweensaid'tracks, a receptacle supporting formmounted onsaid table, upperclamping plates hingedly mounted on said forms in position to engage andclamp the tops of said receptacles, lower clamping plates hingedlymounted on the bottom of said forms for engaging and clamping thebottoms ofsaid receptacle, and means mounted on said clamping plates inposition to be engaged by the respective tracksfor hold ing saidclamping plates in clamping position and permitting the release thereofwhen said means are moved to the cutaway portion of said tracks.

8. A sealing machine for paper receptacles comprising upper and lowerstationary tracks, said tracks being provided with cutaway portions oneach side of said machine, a supporting table rotatably mounted betweensaid tracks, a receptacle supporting form mounted on said table upperclamping plates hingedly mounted on said forms in position to engage andclamp the tops of In witness whereof, I have hereunto affiXed mysignature.

GEORGE K. HENDERSON.

